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u-boot-brain/board/bachmann/ot1200
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Christian Gmeiner 1199ddce9c ot1200: add feature pads 
The older 'mr' variant and the generic variant of the
OT1200 differ in some places. As the name suggests the
generic variant supports more boot devices.

In order to be compatible with the 'mr' variant we define
some 'feature' GPIOs. On the 'mr' variant this pads are
not connected so we define their state with the help
of the internal pullups.

On the generic variant this GPIOs are connected and
represent the state of the hardware.

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2014-10-30 10:46:28 +01:00
..
Kconfig ot1200: remove superfluous "string" tag 2014-10-21 14:02:03 +02:00
MAINTAINERS imx6: add Bachmann OT1200 board 2014-10-06 17:24:28 +02:00
Makefile imx6: add Bachmann OT1200 board 2014-10-06 17:24:28 +02:00
mx6q_4x_mt41j128.cfg imx6: add Bachmann OT1200 board 2014-10-06 17:24:28 +02:00
ot1200.c ot1200: add feature pads 2014-10-30 10:46:28 +01:00
README imx6: add Bachmann OT1200 board 2014-10-06 17:24:28 +02:00

README 

U-Boot for the Bachmann electronic GmbH OT1200 devices

There are two different versions of the base board, which differ
in the way ethernet is done. The variant detection is done during
runtime based on the address of the found phy.

- "mr" variant
FEC is connected directly to an ethernet switch (KSZ8895). The ethernet
port is always up and auto-negotiation is not possible.

- normal variant
FEC is connected to a normal phy and auto-negotiation is possible.


The variant name is part of the dtb file name loaded by u-boot. This
make is possible to boot the linux kernel and make use variant specific
devicetree (fixed-phy link).

In order to support different display resoltuions/sizes the OT1200 devices
are making use of EDID data stored in an i2c EEPROM.